Home / 16,919.40-25,379.10-11,389.80

Finding the Fourth Proportional to 16,919.40, 25,379.10 and 11,389.80

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Solution

The fourth proportional to 16,919.40, 25,379.10 and 11,389.80 is: 17,084.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,919.40 : 25,379.10 = 11,389.80 : x
  2. Step 2: Convert to fraction form
    16,919.40/25,379.10 = 11,389.80/x
  3. Step 3: Cross multiply
    16,919.40x = 25,379.10 × 11,389.80
  4. Step 4: Simplify right side
    16,919.40x = 289,062,873.18
  5. Step 5: Solve for x
    x = 289,062,873.18/16,919.40
  6. Step 6: Final answer
    x = 17,084.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.